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Journal of Materials Science

, Volume 41, Issue 18, pp 6165–6167 | Cite as

Effect of aging on transformation behavior and shape memory effect of a CuAlNb high temperature shape memory alloy

  • Z. Y. Gao
  • Y. Wu
  • Y. X. Tong
  • W. Cai
  • Y. F. Zheng
  • L. C. Zhao
Letter

Recently, considerable interests have been focus on the possibility of commercial producing shape memory alloys with a relative high martensitic transformation temperature (i.e. above 473 K) and excellent shape memory effect. The candidates for these shape memory alloys include Cu-based system and TiNi-X (X = Pd, Pt, Zr, Hf) alloy [1]. TiNi-X alloys are very expensive owing to the addition of third noble element, and their commercial applications have been greatly limited [2, 3]. CuAlNb alloy is a kind of newly developed shape memory alloys exhibiting the similar properties like CuAlNi alloy. The addition of Nb is effective in reducing the grain size and creating the precipitates, resulting in the increase of mechanical properties and plasticity. Thus, the morphology and the amount of precipitated second phase have obvious effects on the martensitic transformation and mechanical behavior of CuAlNb alloys. Though there is a substantial amount of work devoting to the effect of the Nb...

Keywords

Martensite Martensitic Transformation Aging Time Shape Memory Shape Memory Alloy 

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Copyright information

© Springer Science+Business Media, LLC 2006

Authors and Affiliations

  • Z. Y. Gao
    • 1
  • Y. Wu
    • 1
  • Y. X. Tong
    • 1
  • W. Cai
    • 1
  • Y. F. Zheng
    • 1
  • L. C. Zhao
    • 1
  1. 1.School of Materials Science and EngineeringHarbin Institute of TechnologyHarbinChina

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